Rab Sonic Tee - Men's Beluga Medium QBL-01-BEL-MED. Specifications for Rab Sonic Tee - Mens: Manufacturer: Rab Sleeve Length: Short Sleeve Age Group: Adults Package Contents: Rab Sonic Tee - Men's Rab QBL-01-BEL-MED: Sonic Tee - Men's Beluga Medium